公开(公告)号：US5237918A

公开(公告)日：1993-08-24

申请号：US855482

申请日：1992-03-23

申请人： Hirotaka Kobayashi ,  Toshio Hiki ,  Yoshikane Matsumoto ,  Koichi Yageta

发明人： Hirotaka Kobayashi ,  Toshio Hiki ,  Yoshikane Matsumoto ,  Koichi Yageta

IPC分类号： B41J2/245

CPC分类号： B41J2/245

摘要： In a dot-line printer, a hammer bank carrying a plurality of dot printing hammers reciprocally moved along a printingline. Each of the printing hammers is made up of a leaf spring, one end of which is fixedly secured to the hammer bank and to another end of which a printing pin is attached. According to the invention, the plurality of dot printing hammers are separated into an odd-number group and an even-number group, in which the printing hammers in each of the odd-number and even-number groups are further separated into a predetermined number of sub-groups. The printing hammers in the odd-number group are arranged in the upper side of the printing line so that the printing pins extend downwardly and the printing hammers in the even-number group are arranged in the lower side of the printing line so that the printing pins extend upwardly. The printing pins in each of the sub groups of the odd-number group are positioned along a straight line inclined by a predetermined angle with respect to the printing line and the printing pins of the printing hammers in each of the sub groups of the even-number group are positioned along another straight line parallel to the aforementioned straight line. In order to facilitate fabrication of the printing hammers, the printing hammers in each of the sub groups are formed integrally to be in a comb-like shape.

摘要翻译： 在点阵式打印机中，携带多个点印刷锤的锤片组沿印刷线往复运动。 每个打印锤由片簧组成，其一端固定地固定在锤组上，另一端连接着一个印刷销。 根据本发明，将多个点打印锤分离成奇数组和偶数组，其中奇数组和偶数组中的每一个中的打印锤进一步分成预定数量 的子组。 奇数组中的印刷锤布置在印刷线的上侧，使得印刷销向下延伸，并且偶数组中的印刷锤布置在印刷线的下侧，使得印刷 针脚向上延伸。 奇数组的每个子组中的印刷引脚沿着相对于印刷线倾斜预定角度的直线定位，并且印刷锤的印刷销在偶数组的每个子组中， 数字组沿着与上述直线平行的另一条直线定位。 为了便于打印锤的制造，每个子组中的打印锤整体形成为梳状。

公开(公告)号：US5787803A

公开(公告)日：1998-08-04

申请号：US966697

申请日：1997-11-10

申请人： Yuji Ohmura ,  Koichi Yageta

发明人： Yuji Ohmura ,  Koichi Yageta

IPC分类号： B41J25/304 ,  B41J2/28 ,  B41J9/00 ,  B41J25/308

CPC分类号： B41J9/00

摘要： In a dot line printer including a cylindrical platen for supporting a print paper and a hammer bank supporting a plurality of print hammers, the hammer bank is a double bank structure in which a first half of the print hammers are attached to the upper bank and the second half of the print hammers are attached to the lower bank. The positions of print pins in adjacent print hammers are shifted an amount corresponding to one dot so that a predetermined dot lines are printable with one scan of the hammer bank. In order to minimize the hammer gaps of the print hammers, the inner surfaces of the hammer banks are oriented in a direction in which those surfaces access to each other.

摘要翻译： 在包括用于支撑打印纸的圆柱形压板和支撑多个打印锤的锤片组的点阵式打印机中，锤组是双列结构，其中打印锤的前半部分附接到上层， 打印锤的后半部分附着在下岸。 相邻打印锤中的打印销的位置移动一个与一个点对应的量，使得通过锤组的一次扫描可以打印预定的点线。 为了最小化打印锤的锤隙，锤组的内表面沿着这些表面彼此接近的方向定向。